Help with front squats

I've started doing front squats lately as part of my routine and ****...

I can't get low with a steep back angle unless I get on my toes even with no bar and no weights...

I can low bar back squat my own body weight 75kg and am very flexible.

Everytime I front squat it ends up being a back squat (back angle not steep enough) I think of squatting between my legs instead of sitting back in a chair but if I squat between my legs I can only do it if I get on my toes and my heels slightly leave the ground.

I'm tall (6 feet) and I think I have long legs...I believe in his book Mark Rippetoe (Page 233, Starting Strength 2nd Edition) mentioned something about that not being an appropriate build for front squatting.

I don't think it's my build, so what the hell am I doing wrong?

Even if I squat against a wall I get on my toes beyond a certain depth, and my knees go waaaaaaaaaaaay past my toes.

Even if I squat against a wall I get on my toes beyond a certain depth, and my knees go waaaaaaaaaaaay past my toes.

Is that all the time or just doing a front squat? That doesn't sound very flexible at all. I just tried doing what you are doing wrong and I didn't feel any activation in my hamstrings or lower back. It might be a hip mobility issue but I need to see it on a video.